Saturday, August 23, 2014

Nokia E63 Display Light Ways Jumper Solution

Here's the Nokia E63 hardware solution for LCD
display light problem. This problem may result to
show a dark or black screen display for there is
no illuminating backlight LED on the back of the
LCD screen.

To fix the dark screen display problem, you may
first try to replace or install a new LCD screen
module, to easily confirm if the LCD's backlight
LEDs were still working or already damaged.

You can also check the LED's using the
multimeter if you can manage without damaging
the LCD flex connector.

If the newly installed LCD still shows the same
problem and the LED light doesn't light up, refer
to the solution below and locate the highlighted
components on the PCB board.

Nokia E63 Display Light Jumper Ways
Check the filter resistors and capacitors
connected to positive and negative supply
voltage of the LED pins.

Trace also each connection line paths were it is
being connected to a certain components such
as the resistors. Check and replace also the chip
transistors.

If both keypad LED isn't working also, check the
VBAT battery voltage on the filter coil and check
also the coil for possible damaged. If the voltage
reading is okay, replace the LED driver IC, for it
also control the supply voltage both on LCD and
Keypad Light LED.